JP5409540B2 - Liquid material application method to the end face of thin steel plate - Google Patents

Description

The present invention relates to a method of applying a liquid material to an end face of a thin steel plate in response to a change in position of an end portion in the width direction of the thin steel plate in a through plate.

Conventionally, in the production of a thin steel plate, when applying a liquid material (for example, an anti-seizing agent) to the end surface in the width direction of the thin steel plate, for example, as described in Patent Document 1, The liquid material is applied by pressing the scissors roll on which the liquid material is applied.
The scissors roll is attached to the tip of the support member so that the central axis (rotating shaft) can advance and retreat in the width direction of the thin steel plate in the through plate, and can contact the end surface of the thin steel plate by its own weight. Therefore, even if the position of the end portion in the width direction of the thin steel plate in the through plate changes slightly, the scissors roll is always kept in contact with the end surface of the thin steel plate, and the liquid material can be reliably applied. it can.

Japanese Utility Model Publication No. 63-2863

However, in the method of Patent Document 1, since the base end portion of the support member is pivotally supported by the fixture fixed by the screw member, the screw member is not fastened to move the base end portion of the support member. After installation, it is necessary to move the fixture manually, and when connecting a plurality of thin steel plates with different plate widths in series, the operator must adjust the position of the fixture for each thin steel plate. There is a problem that the work must be complicated.
In addition, at the connection location immediately after connecting thin steel plates with different widths, there are corners at both ends in the width direction of the wider steel plate, and the corner portions are removed at both ends in the width direction of the connection locations. A formed notch (notch portion) is provided. Therefore, in order to avoid the saddle roll colliding with the notch, the operator needs to adjust the position of the fixture before and after the connecting portion of the thin steel plates passes, causing a reduction in work efficiency.

Furthermore, when the position change of the width direction edge part of the thin steel plate in a threading board exceeds the movable range of a saddle roll, there also existed a problem that coating of a liquid material became impossible.
The present invention solves the above-described problems, and an object of the present invention is to provide a method for applying a liquid material to an end surface of a thin steel plate that reliably applies a liquid material without requiring a complicated operation.

The method for applying a liquid material to the end face of a thin steel plate according to the present invention, which meets the above-mentioned object, includes a plurality of thin steel plates having different widths connected through a rotatable roll having a liquid material attached to the outer peripheral portion. The roll having a central shaft attached to a rotating member that is sequentially brought into contact with the end surface of the steel plate and is rotatably attached to an oblique shaft whose upper side with respect to the vertical direction is inclined with respect to the thin steel plate is The liquid material application method to the end surface of the thin steel plate biased toward the end surface of the thin steel plate in the through plate,
Advancement / retraction means for advancing / retreating the oblique axis in the width direction of the thin steel sheet is provided, and the advance / retreat means is based on information on a current position and a sheet width of each thin steel sheet in the through plate sent from the outside. The shaft is advanced and retracted to bring the roll into contact with the end face of each thin steel plate in the through plate , and the advance and retreat means has a rotation angle of the rotation material within a preset rotation angle range. When it is detected that the lower limit angle or the upper limit angle is reached, the oblique axis is advanced and retracted so that the rotation angle of the rotating material is within the rotation angle range .

In the method for applying a liquid material to the end face of a thin steel plate according to the present invention, the advance / retreat means is in contact with or close to the turning material, and the turning angle of the turning material becomes the lower limit angle and the upper limit angle. It is preferable that a first sensor and a second sensor are provided for detecting each of the above.

In the liquid material application method for thin steel sheet edge according to the present invention, the moving means includes a slide member for supporting the front Kihasu shaft, and an electric cylinder tip the slide member is fixed, the electric cylinder is detected retreat position by the position detector installed in the internal or external, it is preferable to align the front Kihasu axis.

In the method for applying a liquid material to the end face of the thin steel sheet according to claims 1 to 3 , the advancing / retreating means for advancing and retracting the oblique axis in the width direction of the thin steel sheet is based on information on the current position and the sheet width of each thin steel sheet in the plate. In addition, since the slant axis is advanced and retracted, and the roll is brought into contact with the end face of each thin steel plate in the plate, the thin plate avoids a portion where a step or the like can be formed in the width direction of the thin steel plate. The roll can be stably brought into contact with the steel plate, and damage to the roll or the like can be prevented.

Further , when it is detected that the rotation angle of the rotating material has reached the lower limit angle or the upper limit angle of the preset rotation angle range , the oblique axis is advanced and retracted, and the rotation angle of the rotating material is rotated. Since it is within the moving angle range, it is possible to always ensure that the roll can move in the width direction of the thin steel plate without moving the oblique axis in the rotational angle range. Even if the distance between the end surface and the center in the width direction is different in the sheet passing direction, it is possible to maintain the state in which the roll is in contact with the end surface of the thin steel plate without moving the oblique axis.

The method for applying a liquid material to the end face of a thin steel sheet according to claim 2 detects that the rotation angle of the rotating material has become the lower limit angle and the upper limit angle by contacting or approaching the rotating material to the advancing / retreating means, respectively. since the first and second sensors are provided for advancing and retreating means, first, based on the detection result by the second sensor, rotation member is oblique axis so as to be positioned in the rotational angle range Position adjustment can be performed reliably.

Liquid material application method for thin steel sheet edge of the third aspect, advancing and retracting means, since it has an electric cylinder tip slide member for supporting the inclined shaft is fixed, by the operation control of the electric cylinder Rihasu The position of the shaft can be adjusted with high accuracy.

It is explanatory drawing of the liquid substance coating device with which the liquid substance coating method to the thin steel plate end surface which concerns on one embodiment of this invention is applied. It is a block diagram which shows control of the same liquid substance coating device. (A), (B) is explanatory drawing which shows the liquid substance coating method to the thin steel plate end surface using the same liquid substance coating device. It is explanatory drawing which shows the liquid substance coating method to the thin steel plate end surface using the same liquid substance coating device.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIGS. 1 to 4, the liquid material applying apparatus 10 applied to the liquid material applying method to the end face of the thin steel plate according to the embodiment of the present invention is a rotation in which a liquid material is attached to the outer peripheral portion 24. The flexible roll 14 is sequentially brought into contact with the end surfaces of the plurality of thin steel plates 11, 12, 13 that are connected to each other and the liquid material is applied to the end surfaces of the thin steel plates 11, 12, 13. Device.

As shown in FIG. 1, the liquid material application device 10 is disposed with a gap from the end surface in the width direction of a thin steel plate 11 (the same applies to the thin steel plates 12 and 13) moving (passing through) in the horizontal direction. The electric cylinder 16 is fixed to the support member 15. The support member 15 is supported by a fixed frame (not shown). Here, FIG. 1 is a plan view of the liquid material applicator 10, and the thin steel plate 11 is moved in the direction of the arrow. In the present embodiment, the liquid material applicator 10 is changed to the width of the thin steel plate 11. Although arranged on one side (right side) of the direction, it may be arranged on the other side (left side) of the thin steel plate 11.

A slide member 17 is fixed to the front end portion of the electric cylinder 16 (the end face side of the thin steel plate 11). The slide member 17 is moved in the width direction (left-right direction) of the thin steel plate 11 in the through plate by the operation of the electric cylinder 16. Advance and retreat. The liquid material applicator 10 has a predetermined range in which the slide member 17 can be moved, a position where the slide member 17 is most advanced (moved to the left) within the movable range, and a most backward position (to the right). Detection sensors 18 and 19 are arranged at the moved positions, respectively.
As shown in FIG. 2, the detection sensors 18 and 19 are signal-connected to the control unit 20, and the control unit 20 connects the slide member 17 to the most advanced position or the last position in the movable range via the detection sensors 18 and 19. When the movement to the retracted position is detected, the electric cylinder 16 is operated to adjust the position of the slide member 17 so that the slide member 17 stays within the movable range.

The slide member 17 pivotally supports a slant shaft 23 at the base of the rotating member 22 having the roll 14 attached to the tip.
As shown in FIG. 3B, the oblique shaft 23 of the rotating member 22 is inclined more upward than the thin steel plate 11 in the through plate with respect to the vertical direction. Therefore, as shown in FIG. 3A, the roll 14 that rotates together with the tip of the rotating member 22 that is rotatably attached to the inclined shaft 23 is inclined by its own weight. By rotating around the shaft 23, it is biased toward the end surface of the thin steel plate 11 in the plate, and can abut against the end surface of the thin steel plate 11. Moreover, when the roll 14 leaves | separates from the thin steel plate 11, the rotation material 22 will be rotated by the dead weight of the roll 14, and will be in the state arrange | positioned along the width direction of the thin steel plate 11. FIG.
The outer peripheral portion 24 of the roll 14 in contact with the thin steel plate 11 is continuously or intermittently sprayed with a liquid material from a nozzle (not shown), and the liquid material is always attached. The roll 14 is attached to the front portion of the rotating member 22 via a central shaft 25 on which the roll 14 is rotatably mounted, and can rotate about the central axis of the central shaft 25. The central shaft 25 is arranged in parallel with the oblique shaft 23 of the rotating member 22.

Here, the distance between the center in the width direction of the thin steel plate 11 and the end surface in the width direction is slightly different at different locations in the sheet passing direction, and the end surface of the thin steel plate 11 moves toward the center in the width direction as the thin steel plate 11 moves. In order to maintain the state in which the roll 14 is in contact with the end surface of the thin steel plate 11, it is necessary to bring the roll 14 closer to the center in the width direction of the thin steel plate 11.
At this time, the roll 14 is placed on the end surface of the thin steel plate 11 in a state where the rotating member 22 is arranged along the width direction of the thin steel plate 11 (that is, in a direction orthogonal to the end surface of the thin steel plate 11 in plan view). In order to maintain the contact state, the electric cylinder 16 is accurately operated in accordance with the distance between the center in the width direction of the thin steel plate 11 and the end surface, and the inclined shaft 23 of the rotating member 22 is maintained. It is required to adjust the position. However, such control of the electric cylinder 16 is unrealistic considering both cost and technical aspects.

On the other hand, if the rotating member 22 has a predetermined angle with respect to the width direction of the thin steel plate 11 and the roll 14 is brought into contact with the thin steel plate 11, the end surface of the thin steel plate 11 is in the width direction. Even if retreating, the roll 14 does not immediately leave the thin steel plate 11, and the time for which the roll 14 is in contact with the thin steel plate 11 can be secured without the operation of the electric cylinder 16. And even if the amount of retraction in the width direction of the thin steel plate 11 is large, before the roll 14 is separated from the end surface of the thin steel plate 11, the electric cylinder 16 is operated to bring the slide member 17 closer to the center in the width direction of the thin steel plate 11. Then, the contact state of the roll 14 to the thin steel plate 11 can be continued. Therefore, it is not necessary to strictly control the operation of the electric cylinder 16 according to the distance between the center in the width direction of the thin steel plate 11 and the end face.

Therefore, the liquid material applicator 10 is arranged so that the rotating material 22 has an angle with the width direction of the thin steel plate 11 when the roll 14 is in contact with the end surface of the thin steel plate 11. An angle region that permits rotation (hereinafter also referred to as a “rotation angle region”) is provided. The rotation angle region is an angle region between the lower limit angle θ1 and the upper limit angle θ2 of the rotation angle of the rotation member 22 with respect to the width direction of the thin steel plate 11, as shown in FIG. When the roll 14 is in contact with the thin steel plate 11, the rotation member 22 is adjusted in the rotation angle so as to be located in this rotation angle region, and at least the lower limit angle with respect to the width direction of the thin steel plate 11. It is made to have (theta) 1.

The upper limit angle θ2 is provided so that the roll 14 is moved away from the center in the width direction of the thin steel plate 11 by operating the electric cylinder 16. Even when the support member 15 moves forward, by moving the roll 14 by the electric cylinder 16, it is possible to prevent the roll 14 from being pushed to a position where it cannot physically move.
When the rotating member 22 is in contact with the end surface of the thin steel plate 11 at a rotation angle X (θ1 <X <θ2), the rotating member 22 is within the rotation angle range as shown in FIG. The distance of L and R can be moved inward and outward in the width direction of the thin steel plate 11, respectively, and when the movable distance L or R becomes 0 (zero), the rotating member 22 rotates. The angle becomes the lower limit angle θ1 or the upper limit angle θ2 (X = θ1 or X = θ2).
Here, θ1 and θ2 are angles of, for example, 5 degrees or more and 20 degrees or less and 60 degrees or more and 80 degrees or less.

As shown in FIGS. 3A and 3B, the fixing member 27 fixed to the slide member 17 detects that the rotating member 22 has been rotated to the lower limit angle θ1 and the upper limit angle θ2. 1 and 2nd sensors 28 and 29 are provided. The first and second sensors 28 and 29 are located at the lower limit angle θ1 and the upper limit angle θ2, respectively, when the detection plate 30 provided on the rotation material 22 approaches (or comes into contact). Is detected, and the detection signal is transmitted to the control unit 20. When the control unit 20 receives this detection signal from the first sensor 28, the controller 20 brings the oblique shaft 23 of the rotating member 22 closer to the center in the width direction of the thin steel plate 11, and sends this detection signal from the second sensor 29. When receiving, the electric cylinder 16 is operated so that the oblique axis 23 of the rotating member 22 is moved away from the center of the thin steel plate 11 in the width direction so that the angle of the rotating member 22 falls within the rotation angle range. The control unit 20 includes a RAM, a ROM, and the like, and a program for controlling the operation of the electric cylinder 16 is stored in the ROM.

Moreover, as shown in FIG. 4, the thin steel plates 11, 12, and 13 have different plate widths, and the thin steel plates 11 and 12 and the connecting portions of the thin steel plates 12 and 13 in the width direction both end faces are as shown in FIG. Notches (notch portions) 31 formed to remove corner portions at both ends in the width direction of the thin steel plate having a wider width are provided. If the roll 14 comes into contact with the passing thin steel plates 11, 12, 13 at the location where the notch 31 is formed, the roll 14 or the rotating member 22 may be damaged. When applying the liquid material to the steel plates 11, 12, and 13, it is necessary to prevent the roll 14 from coming into contact with the thin steel plates 11, 12, and 13 at the location where the notch 31 is formed.

As shown in FIG. 2, a central controller 32 provided independently of the liquid material applicator 10 is disposed in a thin steel plate production line with the liquid material applicator 10. The current position and width of each thin steel plate 11, 12, and 13 and the current position of each connection point of the thin steel plates 11, 12, and 13 are detected to manage the status of the production line.
As shown in FIG. 2, the control unit 20 is signal-connected to the central control device 32, and receives a signal indicating the position of each connection point of the thin steel plates 11, 12, 13 in the through plate from the central control device 32, The time when the connected portion approaches the roll 14 is detected. As shown in FIG. 4, the controller 20 connects the connection points of the thin steel plates 12 and 13 (the same applies to the thin steel plates 11 and 12), that is, the notch 31 approaches the roll 14 (for example, close to a distance of 50 cm to 150 cm). ), The electric cylinder 16 is operated to move the slide member 17 away from the thin steel plate 12 so that the roll 14 is not in contact with the thin steel plate 12.

Here, (1) the distance in the width direction between the roll 14 arranged at a position that does not contact the thin steel plate 12 and the extension line of the end surface of the thin steel plate 13 wider than the thin steel plate 12 is L1 (for example, 50 mm or more and 100 mm or less) (2) When the roll 14 is in contact with the thin steel plate 12 and the rotating member 22 is positioned in the rotation angle region, the roll 14 is separated from the thin steel plate 12 and the rotating member 22 is The distance of movement of the roll 14 in the width direction relative to the slide member 17 when abutting against the tip of the stopper 33 whose base is fixed to the slide member 17 is L2 (for example, 50 mm or more and 100 mm or less), and (3) When the value of half the difference between the plate widths W1 and W2 of the thin steel plates 12 and 13, that is, the value of (W2-W1) / 2 is L3 (for example, greater than 0 mm and 150 mm or less) (however, the thin steel plates 12, End surface and the end surface of the 3 shall distance to equal the width direction center), the moving distance of the slide member 17 will L1 + L2 + L3.

When the control unit 20 detects that the connection location of the thin steel plates 12 and 13 has passed the arrangement location of the liquid material application device 10 by a signal transmitted from the central control device 32, the control unit 20 operates the electric cylinder 16. The slide member 17 is brought close to the thin steel plate 13 and the roll 14 is brought into contact with the end surface of the thin steel plate 13. The control unit 20 is signal-connected to a position detector 34 (see FIG. 2) arranged outside the electric cylinder 16, and the control unit 20 is connected to the thin steel plates 11, 12, 13 via the position detector 34. The forward / backward position of the tip of the electric cylinder 16 with respect to the width direction can be detected. When the control unit 20 starts the contact of the roll 14 with the thin steel plate 13, the control unit 20 acquires the plate width information of the thin steel plate 13 from the central control device 32, and the position where L = R in FIG. That is, the distal end portion of the electric cylinder 16 is advanced and retracted so that the distance that the rotating member 22 can move in the width direction inside direction and the outside direction of the thin steel plate 13 is equal within the rotation angle range.
As shown in FIG. 2, the control unit 20, the electric cylinder 16, the support member 15 that supports the electric cylinder 16, the slide member 17, and the rotating member 22 are rotated to the lower limit angle θ1 and the upper limit angle θ2 respectively. The first and second sensors 28 and 29 to detect, the detection sensors 18 and 19 to detect that the slide member 17 has moved to the limit position of the movable range, and the position detector 34 have advancing / retreating means 35. Is configured. Therefore, the advance / retreat means 35 advances and retracts the oblique axis 23 in the width direction of the thin steel plates 11 to 13 based on the information on the current position and the plate width of each of the thin steel plates 11 to 13 in the through plate sent from the outside, The roll 14 can be brought into contact with the end surfaces of the thin steel plates 11 to 13 in the plate.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and all changes in conditions and the like that do not depart from the gist are within the scope of the present invention.
For example, by using contact type sensors for the first and second sensors, it is possible to detect that the upper limit angle and the lower limit angle of the rotation angle of the rotation material have been reached.
The position detector may be built in the electric cylinder.

10: Liquid application device, 11, 12, 13: Thin steel plate, 14: Roll, 15: Support member, 16: Electric cylinder, 17: Slide member, 18, 19: Detection sensor, 20: Control unit, 22: Time Moving material, 23: oblique axis, 24: outer periphery, 25: central axis, 27: fixed member, 28: first sensor, 29: second sensor, 30: detection plate, 31: notch, 32: center Control device, 33: stopper, 34: position detector, 35: advance / retreat means

Claims (3)

A rotatable roll having a liquid substance attached to the outer peripheral portion is sequentially brought into contact with the end faces of a plurality of thin steel plates having different plate widths that are passed through, and the upper side with respect to the vertical direction is thin. A thin steel plate in which the roll having a central shaft attached to a rotating member rotatably attached to an oblique axis inclined from the steel plate is urged toward an end surface of the thin steel plate in the passing plate by its own weight. A liquid material application method to an end face,
Advancement / retraction means for advancing / retreating the oblique axis in the width direction of the thin steel sheet is provided, and the advance / retreat means is based on information on a current position and a sheet width of each thin steel sheet in the through plate sent from the outside. The shaft is advanced and retracted to bring the roll into contact with the end face of each thin steel plate in the through plate , and the advance and retreat means has a rotation angle of the rotation material within a preset rotation angle range. When detecting that the lower limit angle or the upper limit angle has been reached, the oblique axis is advanced and retracted so that the rotation angle of the rotating material is within the rotation angle range. Liquid material application method. The method for applying a liquid material to an end face of a thin steel plate according to claim 1 , wherein the advancing / retreating means is in contact with or close to the rotating material, and the rotation angle of the rotating material is set to the lower limit angle and the upper limit angle. A method for applying a liquid material to an end face of a thin steel plate, wherein first and second sensors for detecting the occurrence of the change are provided. In the liquid material application method to claim 1 or 2 thin steel end face of wherein said moving means is used, the number and the slide member for supporting the front Kihasu shaft, and an electric cylinder tip the slide member is fixed and, the electric cylinder is built or retreat position by the installed position detector to the outside is detected, the liquid material application method for thin steel sheet edge, characterized in that the front Kihasu axis adjusting position.

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